DocumentCode :
912591
Title :
The use of television signals for time and frequency dissemination
Author :
Jespersen, J.L. ; Kamas, G.
Volume :
58
Issue :
6
fYear :
1970
fDate :
6/1/1970 12:00:00 AM
Firstpage :
931
Lastpage :
933
Abstract :
Measurements indicate that a television microwave path is stable to a few microseconds over a period of months. The paths measured are those used by the three major U. S. television networks between Washington, D. C., and Denver, Colo. Path stabilities of ±5 ns (for half-hour periods) were measured by observing the phase of the television color subcarrier. A time dissemination system using the television signal format is described. Using locally broadcast VHF television signals, time information was recoverable with a resolution of several nanoseconds. This corresponds to a frequency stability of a few parts in 1012for one hour averaging.
Keywords :
Clocks; Delay effects; Frequency synchronization; NIST; Out of order; Phase measurement; Radio transmitters; Signal resolution; Stability; TV broadcasting;
fLanguage :
English
Journal_Title :
Proceedings of the IEEE
Publisher :
ieee
ISSN :
0018-9219
Type :
jour
DOI :
10.1109/PROC.1970.7812
Filename :
1449742
Link To Document :
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